Dry cell.



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JVALTER G WAITYE, 0F FEEIVEONE, GEL), A

SSIGNGI-t 33G NIEIAEONKL- GARBGN CQMPANY,

DRY CELL.

l lo Drawing,

To all whom it may concern:

lle it known that I, WALTER G. W'Arr'i, a citizen of the United States, residing at Fremont, in the county of Sanrluslzy and State of Ohio, hare inwuted a certain new and useful Improvement in Dry Cells, of which the'iollowing is a full, clear, and exact (inscription.

My invention relates to a method of maltiug (lry cells.

Dry cells of the present type consist ot a nine can, which is also one elcctrocle, having a hibulous lining on the inside, The carbon electrode is in the center and the mix is pacified inside the lining and around the carbon electrode. In one type of cell, the hihulous lining, which usually consists of pulp board or straw board, is placed in the cell in a thoroughly moistened comlition. In another type of cell, the lining is placed in the zinc can in a dry condition. lift is to this latter type of cell that my invention particularly relates. In the patent to Frederick l White, #LOlSK'TS, the particular advantages of using oil in the lining or on the zinc can of the dry cell are set forth and claimed.

invention consists in a method or constructing a dry cell to obtain the advantagcs set forth in that patent antl also other rul antagcs which will he tlescribecl herein.

It has been "found advantageous to use dry powdery material such as flour in dry cells of both the wet aucl (lry lining type. in the wet lining type, the llour incorporated in the cell in form of a paste. in the clry lining type, it has been the practice to moisten the inside of the zinc can with Water anrl dust the dry flour in it so that it aclhercs to the zinc Zinc will not thoroughly wetwith water hutacts toward it much in the same way that an oily surface will; 2'. 6., the Water instead of spreading evenly over the surface of the zinc collects in small patches. The result of this is that when flour is clustecl around the inside of the can, it adheres in small patches instead of being Specification of Letters Harem.

Patented 04st. 27, 1914.

Application filec't march 26, 1913. Serial Ito, "58,369.

distributed evenly over the zinc. Oils do not act in this way, but will form a uniform coat over the zinc, l", therefore, find that a substantially uniform coat of flour or other powdery material may be applied to the inner surface of the Zinc can by first coating it with an oil such as kerosene, summer oil, raseline, etc, and then putting the flour on the inside surface. Since the entire surface is covered with oil, it will stick so as to form a uniform layer on the zinc. The flour can mos, conveniently be placed on the zinc by putting in a quantity of flour eml then pouring. out all that cloes not stick to it; however, the flour can be placed in in any other way. The oils mentioned are by way of example only, anal or" course the inclhorl is not to be limited thereto. In the ahore mentioned patent; all oils are covered broadly incl my process must be interpreted to inclurle them in the some way.

My process forms a very convenientway of incorporating the powdery material uniforuily in the zinc can, anti in addition I obtain all the benefits of the oil film set forth in patent.

My invention is he limited to dry cells o the dry lining type. "If for any reason it is to coat the zinc of the wet lining type with hour or othermaterial, it is obvious that my methocl can he used. The invention is also not necessarily limited to the application of the material to the zinc. it tlesirecl, the same niethotl may he used to apply it to the hihulous lining.

flaring ilescrihed my invention, What I claim is:

The process of coating 2,. dry cell part h a clry powder which consists in applying thereto a coatin -of a material that wets the surface and ad ing the said powder to the coating.

2 The process of coating an electrode of dry cells with dry powdery material which consists in anplying a, layer of oil thereto and then milling to this layer the (lesirecl amount of said material.

3. The process oi. coating one electrode of 3 dry cell with flour which consists in applying a layer of oil thereto and then adding to the layer the desired quantity of flour.

4. The process of coating the inside of zinc cans of dry cells with powdery material which .consists in filling the can with a material that Wets the surface and pouring it out and then adding a quantity of said powdery material to the Wetted surface of the can.

In testimony whereof, I hereunto affix my signature in the presence of WALTER G. WAITT. Witnesses: Y

(J. B. CARR, H. W. BIRKEMIER. 

